A. A subplan has the PLAN_SUB parameter value set to SUB
B. A top-level plan has the GROUP_OR_PLAN parameter set to the name of the subplan in the resource-plan definition
C. There is no difference in the resource-plan definition
D. A subplan always has the CPU_MTH parameter value set to RATIO
E. The string TOP_LEVEL is appended to the name of top-level resource plans